OBJECTIVES: We sought to compare the protective efficacy of enalapril and losartan on lung diffusion in chronic heart failure (CHF). BACKGROUND: In CHF, hydrostatic overload causes disruption of the alveolar-capillary membrane and depression of carbon monoxide diffusion (DCO); enalapril improves DCO through mechanisms still undefined; and saline infusion in the ...

OBJECTIVE: To compare the effects of a calcium antagonist (amlodipine) and an angiotensin converting enzyme inhibitor (lisinopril) on left ventricular mass and diastolic function in elderly, previously untreated hypertensives. DESIGN: A double-blind randomized parallel group trial. Effects of amlodipine and lisinopril on left ventricular mass and diastolic function (E/A Ratio) ...

OBJECTIVES: Reproducibility of home blood pressure measurements (HBP), and the placebo effect on HBP, were examined to establish the number of subjects required in order to observe a significant antihypertensive effect of a drug for a comparative study between placebo and active treatment. METHODS: Reproducibility of HBP (n = 172 ...

OBJECTIVE: The main purpose of this study was to compare efficacy, tolerability and influence on quality of life (QOL) of nifedipine gastrointestinal therapeutic system (NI) 30-60 mg once a day vs amlodipine (AM) 5-10 mg once a day in elderly patients with mild-moderate hypertension. DESIGN: This was a randomized, double-blind, ...

PURPOSE: The aim of the study was to compare effect of perindopril (4 mg once a day) versus acebutolol (400 mg once a day) on cerebral hemodynamics in hypertensive patients. METHODS: Thirty untreated patients with mild-to-moderate hypertension were studied. Drug influences on Doppler-derived parameters from the cerebral blood flow (CBF) ...

An 8-week, multicenter, double-blind, randomized, parallel-group, forced-titration study was conducted to evaluate the antihypertensive efficacy of candesartan vs. losartan in 654 hypertensive patients with a diastolic blood pressure between 95 and 114 mm Hg from 72 sites throughout the U.S. Eligible patients were randomized to candesartan cilexetil 16 mg once ...

OBJECTIVE: To evaluate the clinical and pressure-flow effects of tamsulosin 0.4 mg once daily in patients with lower urinary tract symptoms (LUTS) caused by benign prostatic obstruction (BPO), as documented by pressure-flow studies performed according to a standardized protocol in one centre. PATIENTS AND METHODS: A single-centre study was conducted ...

AIM: To compare the efficacy and safety of eprosartan and enalapril to lower systolic blood pressure in elderly patients with essential hypertension. METHODS: 334 patients >65 years with sitting systolic blood pressure (sitSBP) > or = 160 mmHg and diastolic blood pressure (sitDBP) 90-114 mmHg were randomized to 12 weeks ...

PURPOSE: Intraurethral prostaglandin E2 (PGE2) administration is a noninvasive treatment modality for erectile dysfunction. The purpose of this study was to evaluate the objective effects of this agent by measuring peak systolic velocities of cavernosal arteries after intraurethral PGE2 administration and comparing with the results obtained with an intraurethral placebo ...

Despite an increase in the number of patients treated for hypertension, blood pressure control is achieved in a minority of patients. The use of rational, well-tolerated combination regimens with complementary modes of action, such as an AT1-receptor blocker administered with a low dose of a thiazide diuretic, provides an effective ...

OBJECTIVE: To determine the antihypertensive efficacy, effect duration and safety of the angiotensin II type 1 receptor blocker candesartan cilexetil and the angiotensin converting enzyme inhibitor enalapril once daily in patients with mild to moderate hypertension. METHODS: A multicenter, randomised, double-blind parallel group study was performed in Finland, France, the ...

Two multicentre trials have investigated the efficacy and tolerability of treatment with once-daily barnidipine, in patients with mild to moderate essential hypertension. The long-term efficacy and safety of barnidipine were demonstrated in a long-term, multicentre, open-label study. In total, 106, 79 and 32 patients were followed for the first, second ...

AIMS: The aims of this study were to study the efficacy and tolerability of felodipine extended release (ER) 5 mg and metoprolol controlled release (CR/ZOC) 50 mg given as a fixed combination (Logimax) or as a free combination in elderly (age greater than 60 years) hypertensive patients, using ambulatory blood ...

This multicentre, double-blind, double-dummy, randomised trial compared the efficacy and tolerability of nisoldipine extended release (10-40 mg) and amlodipine (2.5-10 mg) in 161 patients. The primary end point was a between-treatment comparison of change from baseline to week 8 in mean office diastolic blood pressure (DBP). The least squares mean ...

OBJECTIVE: To assess whether vasopressin V1a receptor blockade reduces the abnormal vasoactive response to cold in patients suffering from Raynaud's phenomenon (RP). METHODS: SR 49059, an orally active, non-peptidic vasopressin V1a receptor antagonist, was given orally (300 mg once daily) to 20 patients with RP in a single-centre, double-blind, placebo-controlled, ...

AIMS: Stevioside is a natural plant glycoside isolated from the plant Stevia rebaudiana which has been commercialized as a sweetener in Japan for more than 20 years. Previous animal studies have shown that stevioside has an antihypertensive effect. This study was to designed to evaluate the effect of stevioside in ...

In hypertension both beta-blockers and calcium antagonists are drugs with proved efficacy. Because only half the patients respond to a single drug, even at full dosage, a second hypotensive agent is frequently required to obtain adequate blood pressure control. The combination of a dihydropyridine calcium antagonist and a beta-blocker can ...

Insulin resistance and hyperinsulinaemia are associated with hypertension although a causative relationship has not been established. The aim of this study was to determine whether a short term reduction in insulin sensitivity induced by nicotinic acid treatment (NA) would alter blood pressure. The study was a double-blind randomised placebo-controlled cross-over ...

The Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure has reported that combinations of low doses of antihypertensive agents from different classes may provide additional antihypertensive efficacy and minimize the likelihood of dose-dependent adverse effects. Doxazosin and amlodipine, alone and in combination, were compared for ...

OBJECTIVE: Prospective recording of IV nicardipine efficacy and safety as a first-line antihypertensive drug in neonates. PATIENTS: Twenty neonates (15 preterm) with systemic hypertension due to steroids administration (n = 14), polycystic kidney disease (n = 1), renal vein thrombosis (n = 1), coarctation of aorta (n = 1) or ...

Essential hypertension is often accompanied by abnormalities of the coagulation/fibrinolytic system, predisposing to a procoagulant state. The aim of the present study was to compare the effects of atenolol (beta1-blocker agent) and irbesartan (angiotensin II type 1 receptor antagonist) on plasma levels of hemostatic/fibrinolytic and endothelial function markers in a ...

BACKGROUND: Although it is generally acknowledged to be a problem in severe hypertension, headache has not been consistently associated with mild-to-moderate hypertension. PATIENTS AND METHODS: In 7 randomized, double-blind, placebo-controlled trials, which included 2,673 patients with mild-to-moderate hypertension (defined as seated diastolic blood pressure of 95-110 mm Hg), patients were ...

AIMS AND METHODS: A study was carried out to evaluate the influence of antihypertensive treatment with combined low doses of enalapril plus isradipine (5+5 mg daily) compared with those of either drug at a higher dose level (10 mg daily) by double-blind, three-way crossover study (balanced Latin square design) in ...

Background: Hypertension is characterized by structural and functional abnormalities that affect the entire cardiovascular system, including the large arteries. The antihypertensive efficacy of doxazosin, a selective alpha(1) antagonist, and its effects on the arterial system were investigated. Method: In our double-blind, randomized, placebo-controlled study including 30 hypertensive patients (doxazosin group: ...

The aims of the present study were to investigate whether induction of nitrate tolerance is a useful treatment in cluster headache and to correlate any changes in attack frequency of cluster headache and nitrate-induced headache to the vascular adaptation during continuous nitrate administration. The results were compared to results obtained ...

BACKGROUND: The use of placebo in clinical trials has been vigorously debated. Placebo control may be useful in disease states, such as stage 1 and stage 2 hypertension as defined by the Sixth Report of the Joint National Committee on Detection, Evaluation and Treatment of High Blood Pressure (JNC VI), ...

The safety and efficacy of adding oral carvedilol (25 mg twice daily) to standardized treatment of unstable angina was assessed in a multicenter, randomized, double-blind, placebo- controlled trial on 116 patients with acute unstable angina. Patients were monitored in an intensive care unit and underwent 48-hour Holter monitoring to assess ...

BACKGROUND: Irbesartan is a newly developed angiotensin II receptor antagonist. Its antihypertensive efficacy and safety in Taiwanese patients with mild to moderate hypertension remains to be determined. METHODS: This was a multicenter, double-blind, randomized, parallel group study. One hundred and sixteen patients from three centers were enrolled. After a placebo ...

This randomized, double-blind, placebo-controlled, parallel-group study evaluated the efficacy and safety of single daily dose diltiazem extended-release (XR) and indapamide, given alone and combined, in 255 male and 170 female patients with mild to moderate hypertension. Blood pressure was assessed both manually in the office and by 24-hour ambulatory blood ...

AIM: To study the effect of losartan potassium in the treatment of mild to moderate hypertension and to compare its efficacy and adverse effect profile with enalaparil maleate. MATERIAL AND METHODS: One hundred and forty five patients with mild to moderate essential hypertension were enrolled in this randomized, double blind, ...

The aim of this large, randomized, double-blind, parallel-group study in hypertensive women was to compare the antihypertensive efficacy and effects on subjective symptoms and quality of life of the new angiotensin II type 1 (AT1) receptor blocker candesartan cilexetil, the angiotensin-converting enzyme inhibitor enalapril, and the diuretic hydrochlorothiazide (HCTZ). Women, ...

BACKGROUND: Structural and functional alterations of the vasculature may contribute to complications of hypertension. Because angiotensin II may be pivotal in some of these vascular abnormalities, we tested the hypothesis that the angiotensin type 1 (AT(1)) receptor antagonist losartan, in contrast to the beta-blocker atenolol, would correct resistance artery abnormalities ...

BACKGROUND: The aim of the study was to investigate the effect of chronic digoxin treatment on circadian blood pressure profile in normotensive patients with mild congestive heart failure. METHODS: In a randomized double-blind, placebo-controlled cross-over protocol, 12 normotensive patients with mild congestive heart failure took digoxin or placebo for a ...

AIM: To compare candesartan cilexetil and lisinopril in fixed combination with hydrochlorothiazide with respect to antihypertensive efficacy and tolerability. METHODS: This was a double-blind (double-dummy), randomised, parallel group comparison in patients with a mean sitting diastolic blood pressure 95-115 mm Hg on prior antihypertensive monotherapy. Treatments were candesartan cilexetil/hydrochlorothiazide 8/12.5 ...

We compared the antihypertensive efficacy of available drugs in the new angiotensin-II-antagonist (AIIA) class. The antihypertensive efficacy of losartan, valsartan, irbesartan, and candesartan was evaluated from randomized controlled trials (RCT) by performing a metaanalysis of 43 published RCT. These trials involved AIIA compared with placebo, other antihypertensive classes, and direct ...

The efficacy and safety of losartan and valsartan were evaluated in a multicenter, double-blind, randomized trial in patients with mild to moderate essential hypertension. Blood pressure responses to once-daily treatment with either losartan 50 mg (n = 93) or valsartan 80 mg (n = 94) for 6 weeks were assessed ...

OBJECTIVE: To determine the long-term efficacy and safety of a fixed, very-low-dose tablet combining one-half the standard dose of perindopril with one-quarter the standard dose of indapamide as first-line treatment in elderly patients. DESIGN: Double-blind, randomized, placebo-controlled study in an outpatient setting. PATIENTS AND INTERVENTIONS: Following a single-blind, placebo run-in ...

The primary objective of this study was to evaluate the pharmacokinetics (PK) and pharmacodynamics (PD) of tasosartan and atenolol administered alone and concomitantly under steady-state conditions in 17 patients ages 18 to 65 years diagnosed with stage 1 to 2 essential hypertension. After a 3- to 14-day qualification period, all ...

In spontaneously hypertensive rats resistance artery structure, endothelial dysfunction and geometry-independent wall stiffness were reduced by an angiotensin AT(1)-receptor antagonist. In previous studies of human hypertension, interruption of the renin-angiotensin system corrected small artery structure and endothelial dysfunction, whereas the beta-blocker atenolol did not. We hypothesized that the AT(1)R antagonist ...

OBJECTIVE: To establish the optimal dose of the perindopril/indapamide combination (Per/Ind) in the treatment of mild or moderate hypertension. DESIGN: This was a randomized, double-blind, placebo-controlled, seven-way parallel-group, dose-ranging study, set in multicenter, outpatient offices/clinics in Europe and Canada. PATIENTS: A total of 438 patients aged between 18 and 75 ...

OBJECTIVE: To compare the safety, tolerability, and antihypertensive efficacy of valsartan with enalapril at different altitudes. METHOD: A total of 142 adult Colombian outpatients with mild to moderate essential hypertension were recruited in 3 cities at different altitudes (Bogotá at 2600 m, Medellin at 1538 m and Barranquilla at 100 ...

We evaluated the effects of acute pretreatment with lamotrigine, a putative glutamate release inhibitor, on the physiological and behavioral responses to intranasal cocaine in cocaine-dependent volunteers (N = 8). The study employed a double-blind, placebo-controlled, within-subject design. Subjects participated in six experimental sessions. On each study day, placebo, lamotrigine 125 ...

BACKGROUND: In patients with Ribbing's disease (RD)--a form of multiple epiphysal dystrophy--hypertension is frequent, often severe, and accompanied by a relevant cardiac dysfunction. HYPOTHESIS: This study was undertaken to evaluate the contribution of the calcium antagonist amlodipine and of the angiotensin-converting-enzyme inhibitor enalapril to blood pressure regulation by studying their ...

All studies suggesting a lower incidence of edema on lacidipine than on amlodipine are based on subjective scoring. Therefore, we have compared edema formation on two dihydropyridine calcium channel blockers, using an accurate method for quantitative assessment of foot volume. In a randomized study, we treated 62 patients with essential ...

The objective of this study was to compare the antihypertensive efficacy and safety of losartan and mibefradil. 324 outpatients (57 +/- 9.2 years) with mild to moderate hypertension were randomly allocated in a double-blind fashion to receive 50 mg of losartan or mibefradil once daily p.o. for 6 weeks after ...

OBJECTIVE: This study was designed to compare with placebo the dose-response of conjugated equine oestrogen (CEE) on blood pressure in hypertensive postmenopausal women. DESIGN AND METHODS: Fourteen postmenopausal women with grade 1-2 hypertension participated in the study which used a double-blind crossover design. There were four randomised treatment phases, each ...

It is well recognised from many clinical trials that there is a blood pressure lowering effect when placebo is administered to patients with essential hypertension ("placebo effect"). The reduction in blood pressure, however, may also be partly due to loss of the alerting response ("white coat effect") as a result ...

OBJECTIVE: To evaluate the clinical efficacy and safety of a new antihypertensive drug combination of trandolapril/verapamil compared to monotherapy with verapamil or trandolapril, in patients with mild to moderate primary hypertension. DESIGN: A multicentre, prospective, randomized, double-blind, controlled cross-over study with specific statistical considerations. SETTINGS: Eighteen primary health care centres ...

This is an open trial investigating the efficacy and metabolic effects of 3 months' treatment with lacidipine in 25 Nigerian Africans with mild to moderate hypertension. There was a significant fall in sitting diastolic blood pressure, with treatment (p = 0.01). There were no significant weight changes. The heart rate ...

This multicenter, double-blind, parallel-group study was designed to assess the efficacy and the safety of fixed low dose combination perindopril 2 mg/indapamide 0.625 mg (Per/Ind) versus atenolol 50 mg (Ate). After a 4-week placebo run-in, 446 hypertensive patients (mean age : 55.8 +/- 11.0 years) were randomised to receive Per/Ind ...